31 9 JV CMC 0 1/2 balance

Your balance looks similar to both our Series 380 and Series 385. In order to determine which one would make the best match for you lies in the bottom nylon shoe. Compare the depth measurement of your bottom to the two balances mentioned. See which of the two it matches up with. Once you have made that choice, we would need to know the weight of your sash to determine which option to go with.